Process and reactor for anaerobic waste water purification

Details Process and reactor for anaerobic waste water purification Process and reactor for anaerobic waste water purification

C - Chemistry, Metallurgy

02

F

C02F 3/28 (2006.01)

Patent

CA 2636281

The invention is directed to a process for the anaerobic purification of waste water using a sludge bed system, which process comprises feeding waste water, and optionally recycle water, to the lower part of an upflow reactor, containing mainly granular biomass thus producing biogas in the treatment passing the resulting gas/liquid/solid mixture upward and separating the gas and solid from the liquid in a three phase separator and thereby generating an anaerobic effluent that is withdrawn from the top of the separator, the improvement comprising separating the solids from the liquid in a separator, wherein, above the separation of the gas from the liquid phase, tilted plates, tubes or other tilted internals are installed in the three phase separator body to increase the effective settling surface, to an upflow reactor suitable for this process as well as to a three phase separator.

L'invention concerne un procédé de purification anaérobie des eaux usées faisant appel à un système de lit de boues. Ledit procédé consiste à alimenter la partie inférieure d'un réacteur à courant ascendant en eaux usées, et éventuellement en eau recyclée, contenant essentiellement de la biomasse granulée, ce qui permet de produire du biogaz lors du traitement faisant remonter le mélange gaz/liquide/solide résultant et séparer les gaz et les solides du liquide dans un séparateur à trois phases et de générer ainsi un effluent anaérobie qui est évacué de la partie supérieure du séparateur, l'amélioration consistant à séparer les solides du liquide dans un séparateur. Au-dessus de la séparation des gaz de la phase liquide, des plaques, des tubes inclinés, ou d'autres parties internes inclinées sont installés dans le corps du séparateur à trois phases pour accroître la surface de décantation réelle, vers un réacteur à courant ascendant convenant à ce procédé ainsi que vers un séparateur à trois phases.

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